Aluminum windows



May 14, 1957 J. H. WARE, JR

ALUMINUM WINDOWS 6 Sheets-Sheet 1 Original Filed April 15, 1955 INVENTORJohn H. Ware, Jr,

m F] i M w M M 4. I AI 9 k ATTORNEY May 14, 1957 J. H. WARE, JR

ALUMINUM WINDOWS Original Filed April 15, 1955 6 Sheets-Sheet 2 fi JohnH.Ware, Jr.

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ALUMINUM WINDOWS Original Filed April 15, 1955 6 Shets-Sheet 3 FIG].

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May 14, 1957 J. H. WARE, JR

ALUMINUM WINDOWS 6 Sheets-Sheet 4 Original Filed April 15, 1955 FIG.II.

John H. wor e, Jr.

ATTY' May 14, 1957 J. H. WARE, JR

ALUMINUM wmnows 6 Sheets-Sheet 5 Original Filed April 15, 1955 Even/0F-John H. Wore, Jr. wmm

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ALUMINUM wmnows Original Filed April 15, 1955 s Sheets-Sheet e jvenfolJohn H.Wor-e, Jr.

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ALUMINUM WINDOWS John H. Ware, Jr., Miami Beach, Fla.

Original application April 15, 1955, Serial No. 501,49}. Divided andthis application February 2, 1956, Serra No. 563,077

6 Claims. (Cl. 189--75) This invention relates to improvements inaluminum windows of the awning type that has a plurality of superposedglass-bearing sash (sometimes called vents) pivotally mounted alongtheir top portions in a rectangular shaped window frame to be swungvertically to opened and closed positions, the window frame including asill member of general channel formation, vertical side members and atop member. There is operating mechanism for simultaneously swinging thesash members, such mechanism including a horizontally extending rockshaft located within the hollow sill member and there is a socalledmanual openator consisting of a shaft mounted for rotation on the sillmember to extend at right angles to the rock shaft and 'having a handcrank thereon, this operating shaft being connected by gearing to therock shaft.

A serious problem encountered in the use of present day windows of thetype mentioned is that it is difficult to obtain a tight fit andespecially a wind-tight fit between the bottom bar or frame member ofthe lowermost sash and the sill member of the window frame.

Objects of the invention are toovercome these difiiculties; to providean improved awning type aluminum window that can be easily operated;that can be operated with considerable force so that the sash can beclosed really tight against the frame to make them weather-tight,water-tight and non-whistling; and that will be substantially fool proofso that no matter'how hard the housewife turns the operator, the sidesof the hollow sill will not be bent apart or deformed and the operatorshaft tilted out of proper alignment.

An important novel feature of the invention resides in the specialconstruction of hollow extruded metal sill member reinforced in aneflicient way and rat the same time so constructed as to permit the rockshaft of the operator mechanism with its gear fixed thereon to bereadily inserted into the same after the window frame has been installedin the window opening, without bending the sill structure and withoutthe use of any tools so that installation of the rock shaft does nothave to bemade at the factory.

The invention includes improvements in the hollow metal sill structurethat is subject matter divided out from my parent patent applicationSer. No. 501,493, filed April 15, 1955.

The invention, with other objects, novel features and the advantagesthereof and the particular construction, combination and arrangements ofparts comprising the same, will be understood from the followingdetailed description when considered in connection with the accompanyingdrawings forming part hereof and illustrating two embodiments of theinvention.

In the drawings:

Fig. l is a perspective view taken from the outer side, of

nited States Patent a window constructed in accordance with the presentinvention, the sash being shown in open position;

Fig. 21s a perspective view to an enlarged scale taken from the outerside, of a corner portion of thewindow frame, and showing one endportion of the rock shaft, the crank thereon and the link connected tothe crank;

Fig. 3 is a perspective view on an enlarged scale taken from the outerside, of the lower part of the window frame and the lowermost sash;

Fig. 4 is an outer perspective view looking from the outer side, of thelower part of the window frame and part of the operating mechanism;

Fig. 5 is a detail side elevation of one end portion of the rock shaftwith one of the bearing sleeves thereon and showing the connection ofone of the crank arms to the rock shaft;

Fig. 6 is a detail side elevation of one of the mounting or housingmembers for the rock shaft and operator, secured to the sill member;

Fig. 7 is a vertical section on the line 77 of Fig. 3;

Fig. 8 is a perspective view looking from the outer side, of the lowerpart of the window frame with the rock shaft partially inserted withinthe sill member;

Fig. 9 is a detail fragmentary horizontal section of the sill membertaken on the line 99 of Fig. 16;

Fig. 10 is a detail perspective view of the pin for keying the gearsegment to the rock shaft;

Figs. ll, 12, 13 and 14 are transverse sections of the sill membershowing respectively successive steps in introducing the rock shaft withits segmental gear into the sill member;

Fig. 15 is a transverse section of the sill member with the rock shaftin operative position therein;

Figs. 16 and 17 are fragmentary perspective views of the sill memberillustrating successive steps in introducing the rear section of themounting or housing for the rock shaft, within the sill member;

Fig. 18 is a fragmentary perspective view of the sill member and the onesection of the mounting or housing for the rock shaft, seated therein;

Fig. 19 is a fragmentary perspective view of the sill member showingboth sections of the mounting or housing for the rock shaft and operatorshaft, secured therein;

Fig. 20 is a transverse section of the sill member showing a modifiedform of gearing between the operator shaft and the rock shaft;

Fig. 21 is a detail horizontal section of the modified constructionshown in Fig. 20;

Fig. 22 is a detail perspective view of the reduction gears;

Fig. 23 is a perspective view of the sill member taken from the frontside thereof.

Referring to a detail description of the particular embodiment of theinvention illustrated in Figs. 1 to 19 of the drawings, the window framecomprises a sill member 29, a top member 30 and vertical side members 31and 32, all formed of extruded aluminum. The sill member 29 and topmember 30 are each of general U-shape channels form and are disposedwith their open sides facing inwardly. The vertical side members 31 and32 which are shown of general L-shape form in cross section have theiropposite end portions fitting within the adjoining end portions of thesill member 29 and top member 30 and are secured thereto in any suitableway as by screws or the like (not shown), or by welding to form asubstantially rigid frame.

The sill member 29 has a base or intermediate horizontal wall 33, afront side wall or face 34 and a rear side wall or face 35, the latteras shown being of greater height than the front side wall 34 and havinga longitudinal flange 36 extending laterally and forwardly therefrom,the flange 36 having a relatively short inwardly directed extension 37.Referring particularly to Figs. 9, 16 and 23 of the drawings, the sillmember 29 has reinforcing means interiorly thereof comprising a septum38 extending lengthwise thereof and across the same from one side Wallto. the other, said septum having an upwardly disposed leg section orweb 38 and a downwardly disposed leg section 38 both joined at theirouter ends to the rear side wall 35 of the sill member intermediate theupper and lower edges thereof, an intermediate concave section 39arcuate shaped in cross section, and a relatively short horizontalshelf-like section or leg 40 extending from one side edge of theintermediate concave section 39 to the front side Wall 34 near the upperedge 34 thereof. 38 represents a second leg section radially disposed tothe concave section 38 but extending downwardly instead of upwardly asdoes leg 38 although both merge with the same rear side wall 35. Theseptum 38, as will be understood, is integral with the sill member 29,the septum being formed with the sill member in the extrusion process.Also it is to be noticed that the'shelflike extension 40 is radiallydisposed, with respect to the concave section 39, while the upwardlyinclined leg or web 38 is tangentially disposed with respect to thatconcave section and joins the rear side wall 35 at an elevation abovethat of the horizontal section 40.

A plurality of sash 42 are suitably mounted in superposed relation onhorizontal pivots at their top portions at 43 within the window framefor swinging movement in a vertical plane.

Operating mechanism is provided for swinging the sash 42 in unison, thesame including a pair of pitman rods 44 extending vertically alongsidethe side members 31 and 32 of the window frame at the inner side thereofin spaced relation thereto. As shown in Fig. l of the drawings, eachsash 42 is connected at opposite ends at the upper part thereof at 45 tothe pitman rods 44 by pivotal link connections 46, and the pitman rods44 at their lower portions are in turn pivotally connected by linkmembers 47 to the outer end portions of crank arms 48 which are fastupon opposite end portions of a rock shaft 49 supported within the sillmember. The rock shaft 49 which is solid, is shown provided with reducedend portions 50 rectangular shaped in cross section. The outer endportions of the crank arms 48 are provided with openings 51 of a sizeand shape corresponding to that of the reduced end portions 50 of therock shaft to fit thereon, and the reduced end portions 50 of the rockshaft 49 are upset as shown, to securely fasten the crank arms 48 to therock shaft. On the rock shaft 49 centrally of the ends thereof, is aworm gear segment 52 keyed thereon to actuate the same.

The worm gear segment 52 which is provided with a central opening or hub53 to fit on the rock shaft 49 and which, of course, is slipped on therock shaft before the crank arms 48 are secured thereto, is made fast tothe rock shaft 49 by a key 54 having a main cylindrical body part 55 andreduced flattened end portions 56 rectangular shaped in cross section,the cylindrical body part 55 of the key fitting in a cylindricaltransverse bore or opening '7 in the rock shaft with its reducedflattened end portions 56 projecting beyond the outer face of the sameand engaging slots 58 in the worm gear segment 52 adjoining the centralopening 53 thereof. This special construction provides simple, efficientmeans for securing the worm gear segment 52 to the rock shaft 49 and atthe same time provides for easy assembly of the worm gear segment on andfastening the same to the rock shaft, this being easily and quicklyperformed by fitting the key 54 in the transverse bore 57 of the rockshaft, slipping the worm gear segment 52 along the rock shaft to the key54 and aligning the slots 58 of the worm gear segment with the flattenedprojecting end portions 56 of the key 54 and then forcing the worm gearsegment laterally to position the same in the plane of the flattened endportions 56 of the key and the latter in tight fitting engagement withthe slots 58 of the worm gear segment. 7 7

Referring particularly to Figs. 9- and 16 to 19, as shown in theseviews, a transverse section of the septum 38 centrally of the ends ofthe sill member 29 is removed so that a space 59 is provided within thesill member toaccommodate a housing for the worm gear segment 52 andsupporting means for the rock shaft 49, and the rear side wall 35 of thesill member 29 is provided with a rectangular shaped opening 60centrally of the ends thereof adjoining the space 59, this opening beingof a width corresponding to the distance between opposing inner endfaces 61, 62 of the septum 38 at either side of the space 59, and theupper and lower edges 63, 64 of the opening 60 being located slightlyinwardly of the top and bottom edges of the rear side wall 35 of thesill member, leaving narrow wall portions 65, 66 of the side wall 35bordering the upper and lower edges of said opening. The housingreferred to, which is of general rectangular shape, is composed of twomating parts or sections 67, 68, each having side walls 69, 70 laterallyspaced from each other to provide a chamber 71 therebetween to receiveand permit free rocking movement of the worm gear segment 52 therein,the side walls 69 and 70 intermediate their ends having complementarysemi-circular shaped recessed portions 71 72 fitting around and formingsupporting bearings for the rock shaft 49 at either side of theWorm-gear segment.

The sections 67 and 68 of the housing at their upper parts haveinterfitting shoulder portions 73, 74 which are provided with threadedapertures 75, 76 receiving screws 77 detachably securing the sectionstogether. The housing sections are also connected by screws 78, 79engaging threaded apertures 80 and S1 in the lower parts thereof. Thehousing section 67 has a rectangular shaped flange 67 projectingdownwardly from the bottom face thereof, the outer face of the flangeforming a continuation of the outer face 82 of the lower part of thehousing section 67, and the upper part of this housing section 67 has acurved outer face 83 as shown. The other housing section 68 has atubular extension 84 of generally cylindrical form extending upwardlyand outwardly at an inclination from the lower outer portion thereof andin which is journaled the operator or operator shaft 85, the latterhaving fixedly secured thereto or formed integral therewith a worm 86which meshes with the worm gear segment 52. The lower end portion 87 ofthe operator shaft fits in a bushing 88 supported in a bearing 89 in thebottom part of the tubular extension 84. The operator or operator shaft85 at its upper end portion is supported in a collar 90 which fits intothe upper end portion of the tubular extension 84 and is held inposition with its lower end against a shoulder portion 91 of saidtubular extension by a keeper pin 92 engaging aligned transverselyextending apertures 93 and 94 in the bearing collar 90 and the adjoiningupper part of the tubular extension 84.. 95 designates a bushingsupported in the bearing. collar 90, the latter having a lowerdownwardly tapering extension 96, the lower end of which fits againstthe upperend of the worm 86. The operator shaft 85 has an upper endportion 97 projecting outside of the bearing collar 90 and formed withangularly related face portions 98. Fitting on the upper end portion 97of the operator shaft is the socket part 99 of a hand crank 100, saidsocket portion being formed correspondingly to the cross sectional shapeof the upper end portion 97 of the operator shaft 85 to fit thereon sothat turning of the hand crank 100 will rotate the operator shaft 85 andactuate the rock shaft 49, and the sash 42 through the crank arms 48,pitman rods 44 and link connections 46 and 47 will be swung inwardly oroutwardly in accordance with the direction of rotation of the operatorshaft 85. The hand crank 100 is detachably secured on the upper endportion 97 of the operator shaft 85 by a set screw 101. The handle 102of the crank 1.90, which as shown has a conventional swivel connection103 therewith, extends parallel to the operator shaft 85, the hand crank100 extending at an obtuse angle to the operator shaft;

The sectional housing 67, 68 fits nicely into space 59 within thesill'member 29 between the opposing inner ends 61 and 62 of thereinforcing septum 38, the housing being thus held against movementlongitudinally of the sill member 29 by the inner ends of the septum 38.The outer face 67 of the housing section 67 fits against the inner faceof the front side wall 34 of the sill member 29, the lower edge of theflange 67 and the bottom portion of the tubular extension 84 restingupon the base of horizontal wall 33 of the sill member 29, the housingbeing secured firmly seated in position within the sill member 29 byscrews 106 engaging threaded apertures 107 in an attaching plate portion108 on the outer side of the housing member 68 and apertures 109 in therear side wall 35 of the sill member 29, said attaching plate portionprojecting laterally from the marginal edges of the outer side of thehousing section 68 and fitting against the outer face of the rear sidewall 35 of the sill member. As shown in the drawings, when the housing67 63 is assembled with the rock shaft 49 in position within the sillmember 29, the rock shaft 49 is disposed along and over the upper faceof the concave section 39 of the reinforcing septum 38 paralleltherewith so that said concave section 39 of the septum serves assupporting means for the rock shaft 49, the septum 38 thus functioningin this manner in addition to acting as rigidifying means for the sillmember 29, and the rock shaft 49 being advantageously supported atopposite ends as well as at its central part to insure easy smoothoscillation of the same.

116 designates bushings fitting in the recessed portions 71 and 72 ofthe housing sections 67, 68, and 111 are bushings at opposite endportions of the rock shaft 49 held in position by engagement of theoutwardly extending annular end flanges thereof abutting against theouter ends of the concave section 39 of the septum 38, the rock shaftextending through these bushings, the bushings 110 fitting within therecessed portions 71, 72 of the housing section 67, 68, and the bushings111 fitting upon the concave section 39 of the septum 38 when the rockshaft 69 with its worm gear segment has been assembled within the sillmember 29. The bushings 110 and 111 are preferably constructed of nylonor like material.

The worm gear segment 52 in extent is substantially a quadrant to effectsubstantially a 90 throw of the cranlt arms 48. The invention providesin a simple, advantageous way for limiting the extent of oscillatorymovement of the worm gear quadrant 52 to prevent disengagement of thesame from the worm 86 when the hand crank 100 is turned to effectswinging of the sash 42. The means for this purpose comprises abutmentportions 112 and 113 cooperating respectively with end faces 114 and11:3 of the worm gear quadrant 52. The abutment portion 112 on thehousing 67, it will be noted, is formed by the shouldered portion 73 atthe upper part of said housing section, the same extending at one end ofand across that part of the chamber 71 formed in the other housingsection 68. The other abutment portion 113 on the lower part of thehousing section 67 is formed integral therewith and projects inwardlytherefrom in the path of movement of the end face 114 of the worm gearquadrant 52. The worm gear quadrant 52, as shown, is relatively large toprovide for a considerable reduction between the same and the worm 86.An important feature of the invention resides in the specialconstruction of the hollow extruded metal sill member that permits therock shaft 49 with the relatively large size worm gear quadrant $2 fixedthereon, to be readily inserted into the same after the window frame hasbeen installed in the window opening, without bending the sillstructure, without making the same oversize, and without the use of anytools so that installation of the rock shaft, the gearing associatedtherewith and the mounting or supporting means for the rock shaft, doesnot have to be made at the factory.

Referring now particularly to Figs. 4, and 11 to of the drawings, itwill be seen that the distance between the outer edge 36 of the flange36 of the rear side wall ofthe hollow sill member 29 and the upper edge34 of the front side wall 34 of the sill member is less than thedistance indicated by the dotted line a-b of the outer edge of the endteeth 115* and 116 of the worm gear quadrant 52. from each other, butsufliciently greater than the distance indicated by the dotted line 0-0?from the base line e of the end tooth 116 at the inner side thereof tothe outer face of the partly circular inner hub part 117 of the wormgear quadrant at the point f to allow the end tooth 116 of the worm gearquadrant to pass by the outer edge 36 of the flange 36 of the sillmember simply by positioning the worm gear quadrant 52 relative to thesill member 29, as shown in Fig. 13 of the drawing, with the edge 36 ofthe flange extension 36 disposed between the end tooth 116 and theadjacent tooth 118 of the worm gear quadrant, and then turning the wormgear quadrant slightly in the direction of the arrow. The rock shaft 49I and the worm gear quadrant 52 can then be moved to the member 29 canbe easily done by supporting the rock shaft by grasping the crank arms48 thereof in either hand as illustrated in Fig. 4 of the drawings.

After the rock shaft 49 with the worm gear quadrant 52 fixed thereon hasbeen placed within the sill member, the sectional housing 67, 68 can beeasily introduced into the hollow sill member and properly positioned toenclose the worm gear quadrant and support the rock shaft, through theopening 60 in the rear side wall 35 of the sill member 29 as illustratedin Figs. l6, l7 and 18. The rock shaft is lifted upwardly from theconcave sec tion 39 of the septum 33 to the position shown in Fig. 16,the housing section 67 being then moved laterally into the sill memberbeneath the rock shaft and canted slightly to move its upper part aroundand to one side of the rock shaft, the latter being gradually loweredand moved slightly laterally so that the same is brought into alignmentwith and enters the semicircular shaped recessed portion 71 of thehousing section, and the lower part of the housing section is movedlaterally into position against the inner face of the front wall 34 ofthe sill member. The housing section 68 is then inserted into the sillmember by first canting the same to move the upper part of it past andto the rear side of the narrow wall portion 65 bordering the upper edgeof the opening 60 and then tilting the housing section back to verticalposition and moving the same laterally until it is in matingrelationship with the housing section 67, the two housing sections 67,68 being then secured by the fastening screws 77 and 78, the latterextending from the exterior of the front side wall 34 of the sill memberthrough apertures 119 therein and serving to secure the housing sectionsto the front wall 34 of the sill member. The securing of the housingsections within the sill member is then completed by securing theattaching plate 108 to the rear side wall 35 of the sill member byapplying the screws 106.

As shown in Figs. 7 and 16, a removable cover member designatedgenerally 129, is provided, the same being fornied of extruded aluminumand being of inverted L-shape form in cross section, the same having avertically extending side wall 121 t! e lower marginal portion 122 ofwhich is offset laterally to fit against the outer face of the frontside wall 34 of the sill member. The horizontal wall 123 of the covermember has a vertically directed extension 124 adapted to fit against apacking strip (not shown) to be mounted in a longitudinal groove in theinwardly directed extension 37 of the flange 36 on the rear side wall 35of the sill member. The cover member which is secured to the front sidewall 34 of the sill member by screws (now shown) closes the space at thefront side of the sill member 29 between the front side wall 34 thereofand the extension 37 of the. flange 36,

7 the lower marginal edge portion 126 of the bottom rail 127 of thelowermost sash 42 fitting against the upper side marginal portion of thevertical side wall 121 of the cover member when the sash 42 is moved toclosed position by the operating mechanism.

It will be noted that the invention provides a hollow extruded metalsill member reinforced in an efficient way to strongly resist strainstending to bend the side walls thereof apart, and the housing 67, 68 forthe worm gear quadrant 52 is securely held seated in the sill member sothat the operator or operator shaft can be operated with considerableforce so that the sash can be closed sufiiciently tight against thewindow frame to make them weather-tight as desired without deformationof the side walls of the sill member and without tilting of the operatorshaft out of proper alignment and stripping the gears, a smooth,satisfactory operation of the operating means being insured even underadverse conditions of careless turning of the operator shaft harder thanis necessary. The special arrangement of the operator shaft 85 extendingat an upward outward inclination from the rear side wall of the sillmember with the hand crank 101) disposed at an obtuse angle to theoperator shaft and the crank handle extending at an inclination to thecrank substantially parallel with the operator shaft as shown in Fig. 6of the drawings, has important advantages. The handle of the hand crankis not only arranged for convenient operation but also provides fordisposing the hand crank 100 horizontally below a curtain on the windowframe or positioned to extend vertically behind the curtain.

In Figs. 20, 21 and 22 is illustrated a modified form of gearing betweenthe operator shaft and the rock shaft, this modified gearing includingadditional gear elements providing for a greater ratio of reductionbetween the worm gear quadrant and the worm on the operator shaft, themodified construction shown in these views being otherwise the same asthat hereinbefore described except for certain minor structuraldifferences in the form of the housing sections for the gearing.

In these views, 128 generally designates the hollow reinforced extrudedmetal sill member, 129 the rock shaft with the worm gear quadrant 130fixed thereon, 131 is the operator shaft and 132 is the worm on the rockshaft.

The housing sections for the gearing are designated respectively 133 and134, the same being mounted within and secured to each other and to thesill member 128 in substantially the same way as in the constructionhereinbefore described in detail. The numerals 135 and 136 designate thepair of abutments on the housing section 134 cooperating with the endfaces 137 and 138 of the worm gear quadrant 130 to limit the extent ofrocking movement of the same. The housing section 134, in the presentinstance, as shown has a curved front wall portion 139 extendingoutwardly from the attaching plate portion 139 and merging into thelower part of the upwardly and outwardly inclined tubular part 140 inwhich the operator shaft 131 is journaled. I

interposed between the worm 132 and the worm gear quadrant 130 is areduction cluster gear comprising a relatively large worm gear 141 and asmall worm gear 142, the two worm gear elements being rigidly securedtogether and mounted for rotation on a transverse shaft 143 fixedlymounted at opposite end portions in openings 144 in the side walls 145of the housing section 134, the smaller worm gear element 142 and theother worm gear element 141 meshing respectively with the worm gearquadrant 130 and worm 132.

The reduction gear elements 141 and 142 are secured together in thefollowing way. The smaller gear element 142 is made of a widthsufficiently greater than the width of the larger gear element 141 toprovide an end portion 142 to fit within a central opening 146 providedin the larger gear element 141 with a portion 142 disposed at no ide ofthe larger gear element 141. The central opening 146 includes shortradially extending slots 147 to receive the teeth 142 of the smallergear element 142. The size of the central opening 146 in thelarger gearelement 141 and the radial slots 147 are slightly smaller than the mainbody part of the smaller gear element 142 and the teeth 142 of thelatter, the relative size of the parts being such that when the endportion 142 of the smaller gear element 142 is inserted under pressureinto the central opening 146 in the larger gear element 141, the twogear elements tightly interfit, one with the other, and are rigidlysecured together against relative endwise movement as well as beinginterlocked to rotate together.

The foregoing description has been taken from the specification of mysaid parent patent application, Ser. No. 501,493, filed April 15, 1955,from which this application has been divided. This application isdirected to and is based upon the formation of the extruded hollowwindow sill, and particularly its cross sectional arrangement as can beseen from Fig. 16. A new technical effect seems to result from theconstruction of the shelf-like horizontally extending leg 40 and theintermediate c011- cave section 39 into which it merges from a radialdirection, when that concave section is supported from the side wall orface 35 by means of an integral leg 33 that rises from the concavesection in a tangential direction to merge with that side wall at anelevation below its top. This tangential leg has the double function ofsupporting, with the leg under tension, the concave section when thatsection is under stress from the operation of the Window sash operatingrockable shaft 49, and with the leg under compression it resistsdeformation of the sill as a result of such forces applied to the sillby that rockable shaft. So the septum has the combined function ofsupporting the rockable shaft and also of resisting deformation of thesill as a result of operation of that shaft. The inclination of the leg38 and the space above its top has a function too, namely, space must beprovided in the upper region of the sill for the shaft to be displacedupwardly as shown in Fig. 16, and the inclination of the leg 38 aids inguiding the shaft when it is moved downwardly, to slide back into itsseat formed by the concave section 39. The second leg 38* that isdownwardly inclined from the concave section actually can be omitted, ifdesired, because the functioning of the rising tangential leg 38 is soeffective, but if the second leg is used, it is most effective when usedas shown extending radially from the concaved swtion and merging withthe side wall 35 above its bottom to form with that side and the leg 38a generally triangular reinforcing formation.

I claim:

1. An extruded metal window frame sill member of channel form havingmeans integral therewith for reinforcing the side walls thereof againstdeformation, comprising a septum of generally horizontally disposed formin cross section with oppositely disposed diverging leg portions thereofjoined at their outer side edges to one side wall of the sill member andwith the other leg portion of the septum joined at its opposite sideedge to the opposite side wall of the sill member.

2. An extruded metal window frame sill member of channel form havingmeans integral therewith for reinforcing the side walls thereof againstdeformation, comprising a septum having oppositely disposed divergingleg portions joined at their outer ends to one side wall of the sillmember, an. intermediate arcuate shaped section having its concave sidefacing upwardly, and an outer straight section joined at its outer sideto the opposite side wall of the sill member.

3. An extruded metal window frame sill member of channel form, the rearside wall of the sill member having a longitudinal flange extendinglaterally and forwardly from its upper edge, the front side wall of thesill member being of less height than the rear side wall thereof, theupper edge of the front side wall being spaced laterally from saidfiange,,the sill member having means integral therewith for reinforcingthe side walls thereof against distortion, comprising a septum ofgenerally horizontally disposed form in cross section with oppositelydisposed diverging leg portions thereof joined at their outer side edgesto one side wall of the sill member, and with the other leg portion ofthe septum joined at its outer side edge to the opposite side wall ofthe sill member.

4. An extruded metal window sill member of channel form having meansintegral therewith for reinforcing the side walls thereof againstdeformation, which means comprise a septum extending longitudinally ofthe sill above the bottom thereof whose cross sectional shape includes acentral section with a concave top, a radially disposed leg by which thecentral section is supported from one wall, a substantially tangentiallydisposed leg by which the central section is supported from the otherwall, and a second radially disposed leg associated with the concavesection to extend therefrom to the same side wall to which extends thetangentially disposed leg.

5. An extruded metal window sill member of channel form having combinedmeans integral with the sill for reinforcing it interiorly againstdeformation forces applied therewithin, which means comprise a septumextending lengthwise of the sill above the bottom thereof having a shelfsection formed of a horizontal leg extending inwardly from one side wallof the sill and merging with an intermediate concave section adapted tosupport a window-sash operating rockable shaft which section in turnmerges into a leg rising tangentially from the concave section to theopposite side wall which latter leg provides both tensioned lift for theconcave section and compressed 10 resistance to deformation of the sillresulting from rocking of the shaft, and a second leg extending radiallyfrom the concave section downwardly to the side Wall to which isattached the tangentially disposed leg.

6. An extruded metal window sill member of channel form having meansintegral therewith for reinforcing the side walls thereof againstdeformation, which means comprise a septum extending longitudinally ofthe sill above the bottom thereof whose cross sectional shape includes acentral section with a concave top adapted to support a window sashoperating rockable shaft that during assembly has to be unseatedupwardly, a radially disposed leg by which the central section issupported from one wall, and a substantially tangentially disposed legby which the central section is supported from the other wall, saidradially disposed leg being substantially horizontal and thetangentially disposed leg engages the side wall with which it merges atan elevation above that of the horizontal leg, said tangential legfunctioning as a guide for facilitating the placement of said rockableshaft into the concave top from its unseated position, and supportingthe concave section when such section is under stress from the operationof the rockable shaft.

References Cited inthe file of this patent UNITED STATES PATENTS1,856,311 Boyle et al May 3, 1932 2,613,928 Cote Oct. 14, 1952 2,641,465Snow June 9, 1953

